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pc: add node-id property to CPU

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it will allow switching from cpu_index to property based
numa mapping in follow up patches.

PS:
patch changes default value of CPUState::numa_node from 0
to CPU_UNSET_NUMA_NODE_ID. The only place for x86 that
would affected is monitor's 'infor numa' command which
uses that field. However legacy 0 value is still preserved
by pc_cpu_pre_plug() in this patch if user/numa.c hasn't
set it explicitly, so there is no change in behavior.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Message-Id: <1494415802-227633-4-git-send-email-imammedo@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
This commit is contained in:
Igor Mammedov 2017-05-10 13:29:47 +02:00 committed by Eduardo Habkost
parent 0b8497f08c
commit 93b2a8cb0b
2 changed files with 18 additions and 0 deletions
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17
hw/i386/pc.c
View file

@ -1893,6 +1893,7 @@ static void pc_cpu_pre_plug(HotplugHandler *hotplug_dev,
DeviceState *dev, Error **errp)
{
int idx;
int node_id;
CPUState *cs;
CPUArchId *cpu_slot;
X86CPUTopoInfo topo;
@ -1982,6 +1983,22 @@ static void pc_cpu_pre_plug(HotplugHandler *hotplug_dev,
cs = CPU(cpu);
cs->cpu_index = idx;
node_id = numa_get_node_for_cpu(cs->cpu_index);
if (node_id == nb_numa_nodes) {
/* by default CPUState::numa_node was 0 if it's not set via CLI
* keep it this way for now but in future we probably should
* refuse to start up with incomplete numa mapping */
node_id = 0;
}
if (cs->numa_node == CPU_UNSET_NUMA_NODE_ID) {
cs->numa_node = node_id;
} else if (cs->numa_node != node_id) {
error_setg(errp, "node-id %d must match numa node specified"
"with -numa option for cpu-index %d",
cs->numa_node, cs->cpu_index);
return;
}
}
static void pc_machine_device_pre_plug_cb(HotplugHandler *hotplug_dev,

1
target/i386/cpu.c
View file

@ -3986,6 +3986,7 @@ static Property x86_cpu_properties[] = {
DEFINE_PROP_INT32("core-id", X86CPU, core_id, -1),
DEFINE_PROP_INT32("socket-id", X86CPU, socket_id, -1),
#endif
DEFINE_PROP_INT32("node-id", CPUState, numa_node, CPU_UNSET_NUMA_NODE_ID),
DEFINE_PROP_BOOL("pmu", X86CPU, enable_pmu, false),
{ .name = "hv-spinlocks", .info = &qdev_prop_spinlocks },
DEFINE_PROP_BOOL("hv-relaxed", X86CPU, hyperv_relaxed_timing, false),